"I just reacted, I guess," said Jerry Maroni, who was in a hospital bed on Tuesday recovering from his own gunshot wound. "I figured, you know what, it's do or die, as simple as that. He's here to kill people and he's not playing."

Another customer, Juan Rodriguez, helped the 60-year-old Maroni handle 25-year-old David Mazzocco inside the Fort Pitt Inn early Monday morning. The men were hailed as "courageous" by Lt. Andy Schurman, who said "it could have been a lot worse" if they hadn't acted.

"I run towards him, and he shot and he missed me, and then I got to him, and he shot again and he nicked me here," said Maroni, pointing to a mark near his ear. "By that time, I got a hold of his wrist. I punched him in the face, and he shot me through the shoulder here, and then I got him down."

"I just took the gun off him, and I just kept beating him and beating him in the head," Maroni said. Rodriguez came over to help "because this guy wasn't quitting. He just kept wanting to get up, and I'm beating him. Juan said, 'Keep hitting him.' I just kept pounding his head, and he still didn't want to quit. And when the cops came, he still didn't want to."

Police said Mazzocco got agitated while texting someone, apparently a girlfriend with whom he was having relationship problems. Then he left the bar and returned with three guns and opened fire around 12:45 a.m., police said.

Mazzocco killed 29-year-old James Adams with a head shot and critically wounded another customer in the neck before Maroni tackled him, getting shot in the arm himself, police said.

"I just didn't want to see no one else get killed. There was a lot of people in there," Maroni said. "Everybody's calling us heroes, but it's just the situation you're in. What are you going to do? You don't want to die. You got to do something. So there's two already laying there -- you got to do something. Somebody got to do something."

The World Anti-Doping Agency (WADA) said Sunday it was "very alarmed" by reports of widespread doping by track and field athletes in major competitions including the Olympic Games and world championships.